{"id":4221,"date":"2020-04-03T16:27:05","date_gmt":"2020-04-03T08:27:05","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4221"},"modified":"2020-04-03T16:27:05","modified_gmt":"2020-04-03T08:27:05","slug":"valarray%e7%94%a8%e6%b3%95%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4221","title":{"rendered":"valarray\u7528\u6cd5\u7b80\u4ecb"},"content":{"rendered":"

\u539f\u6587\u5730\u5740<\/a><\/p>\n

\u539f\u521bdigu \u6700\u540e\u53d1\u5e03\u4e8e2007-07-30 16:36:00 \u9605\u8bfb\u6570 16343 \u6536\u85cf
\n\u5c55\u5f00
\nvalarray\u7c7b\u4f3cvector\uff0c\u4e5f\u662f\u4e00\u4e2a\u6a21\u677f\u7c7b\uff0c\u5176\u4e3b\u8981\u88ab\u7528\u6765\u5bf9\u4e00\u7cfb\u5217\u5143\u7d20\u8fdb\u884c\u9ad8\u901f\u7684\u6570\u5b57\u8ba1\u7b97\uff0c\u5176\u4e0evector\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u4ee5\u4e0b\u4e24\u70b9
\n1\u3001valarray\u5b9a\u4e49\u4e86\u4e00\u7ec4\u5728\u4e24\u4e2a\u76f8\u540c\u957f\u5ea6\u548c\u76f8\u540c\u7c7b\u578b\u7684valarray\u7c7b\u5bf9\u8c61\u4e4b\u95f4\u7684\u6570\u5b57\u8ba1\u7b97\uff0c\u4f8b\u5982xarr = cos(yarr) + sin(zarr)\uff1b
\n2\u3001\u901a\u8fc7\u91cd\u8f7doperater[]\uff0c\u53ef\u4ee5\u8fd4\u56devalarray\u7684\u76f8\u5173\u4fe1\u606f\uff08valarray\u5176\u4e2d\u67d0\u4e2a\u5143\u7d20\u7684\u5f15\u7528\u3001\u7279\u5b9a\u4e0b\u6807\u7684\u503c\u6216\u8005\u5176\u67d0\u4e2a\u5b50\u96c6\uff09\u3002<\/p>\n

\/\/ valarray_acos.cpp
\n\/\/ compile with: \/EHsc
\n#include <valarray>
\n#include <iostream>
\n#include <iomanip><\/p>\n

int main( )
\n{
\nusing namespace std;
\ndouble pi = 3.14159265359;
\nint i;<\/p>\n

valarray<double> va1 ( 9 );
\nfor ( i = 0 ; i < 9 ; i++ )
\nva1 [ i ] = 0.25 * i – 1;
\nvalarray<double> va2 ( 9 );<\/p>\n

cout << “The initial valarray is:”;
\nfor (i = 0 ; i < 9 ; i++ )
\ncout << ” ” << va1 [ i ];
\ncout << endl;<\/p>\n

va2 = acos ( va1 ); \/\/\u5bf9va1\u4e2d\u6240\u6709\u5143\u7d20\u6c42\u53cd\u4f59\u5f26\u7136\u540e\u8d4b\u503c\u7ed9va2\u4e2d\u7684\u5bf9\u5e94\u5143\u7d20
\ncout << “The arccosine of the initial valarray is:\/n”;
\nfor (i = 0 ; i < 9 ; i++ )
\ncout << setw(10) << va2 [ i ]
\n<< ” radians, which is ”
\n<< setw(11) << (180\/pi) * va2 [ i ]
\n<< ” degrees” << endl;
\nreturn 0;
\n}<\/p>\n

\u6ce8\u610f\uff1avc6\u4e0d\u652f\u6301va2 = acos (va1);\u64cd\u4f5c\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

\u539f\u6587\u5730\u5740 \u539f\u521bdigu \u6700\u540e\u53d1\u5e03\u4e8e200<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-4221","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4221"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4221\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}